News & Opinion
Top 10 Innovations
Cell & Molecular Biology
Disease & Medicine
Ecology & Environment
Genetics & Genomics
Pharma & Biotech
Image of the Day
How Plants Evolved Different Ways to Make Caffeine
Ruth Williams | Sep 20, 2016
Caffeine-producing plants use three different biochemical pathways and two different enzyme families to make the same molecule.
Karen Zusi | Oct 20, 2015
Caffeinated nectar makes bees more loyal to a food source, even when foraging there is suboptimal.
How Caffeine Affects the Body Clock
Ruth Williams | Sep 16, 2015
Evening consumption of the drug leads human circadian rhythms to lag.
Bob Grant | May 31, 2014
Proof, Caffeinated, A Sting in the Tale
The Insect Cookbook
Caffeine Boosts Memory Consolidation?
Tracy Vence | Jan 13, 2014
A new study purports to show that post-learning caffeine consumption can improve memory, but some scientists are not convinced.
Kerry Grens | Aug 16, 2013
Heavy coffee drinkers under 55 are more likely to die sooner, a study shows.
Kate Yandell | Mar 11, 2013
The pollinators are more likely to recall flowers that offer them a caffeine reward.
Caffeine Affects Estrogen Levels
Megan Scudellari | Jan 26, 2012
Moderate caffeine intake is associated with higher estrogen levels for Asians, but lower levels for whites.
How Caffeine Fights Cancer
Jef Akst | Aug 15, 2011
Caffeinated drinks may help prevent skin cancer by inhibiting a DNA repair pathway, thus killing potentially precancerous cells.
Bacteria live on caffeine
Tia Ghose | Jun 10, 2011
Researchers discover that some bugs crave the buzz of caffeine.